Kumbhaka - Chapter 2.67

This Kumbhaka named Bhastra should be specially done as it pierces the three knots that have well arisen in the body.

सम्यग्गात्रसमुद्भूतं ग्रंथित्रयविभेदकम् । विशेषेणैव कर्तव्यं भस्त्राख्यं कुभकं त्विदम् ॥ २.६७।।